Xperia Z shipping with lower quality screen?

Some rumblings on AVForums pointed me to here: http://forum.xda-developers.com/showthread.php?t=2108274 , some talk about the screen on the dev units used for a lot of the pre-release reviews being higher spec (quote: "Japanese version") than those being demo'd in shops and released to retail ("Euro version")...does it bother me, not really, still looking forward to it - but thought I'd highlight it in case it matters to anyone else

Nice find. Thanks.
I was mildly interested in the Z, but I saw an instore dummy today... It's huge. And has a form I find rather unpleasant to hold - like a huge iPhone 4S (I hated the 4/4S for it's cold slippery design)....